Photovoltaic module capable of outputting AC voltage without converting level of DC voltage
First Claim
Patent Images
1. A photovoltaic module, comprising:
- a solar cell module including a plurality of solar cells;
a capacitor unit to receive a direct current (DC) voltage from the solar cell module and to store the DC voltage output from the solar cell module;
an inverter unit to convert the DC voltage stored in the capacitor unit into an alternating current (AC) voltage without converting a level of the DC voltage received from the solar cell module;
a controller to control the inverter unit;
an input current detector to detect an input current flowing into the capacitor unit; and
an input voltage detector to detect an input voltage of both terminals of the capacitor unit,wherein the solar cell module outputs the DC voltage having a level higher than a peak value of a grid voltage,wherein the controller calculates a maximum power for the solar cell module and controls the inverter unit to output the AC voltage using a DC voltage corresponding to the maximum power, andwherein the plurality of solar cells include multi-cutting cells, respectively.
3 Assignments
0 Petitions
Accused Products
Abstract
Disclosed is a photovoltaic module. The photovoltaic module includes a solar cell module including a plurality of solar cells, and an inverter unit to receive a direct current (DC) voltage from the solar cell module and convert the DC voltage received from the solar cell module into an alternating current (AC) voltage without converting a level of the DC voltage received from the solar cell module.
8 Citations
14 Claims
-
1. A photovoltaic module, comprising:
-
a solar cell module including a plurality of solar cells; a capacitor unit to receive a direct current (DC) voltage from the solar cell module and to store the DC voltage output from the solar cell module; an inverter unit to convert the DC voltage stored in the capacitor unit into an alternating current (AC) voltage without converting a level of the DC voltage received from the solar cell module; a controller to control the inverter unit; an input current detector to detect an input current flowing into the capacitor unit; and an input voltage detector to detect an input voltage of both terminals of the capacitor unit, wherein the solar cell module outputs the DC voltage having a level higher than a peak value of a grid voltage, wherein the controller calculates a maximum power for the solar cell module and controls the inverter unit to output the AC voltage using a DC voltage corresponding to the maximum power, and wherein the plurality of solar cells include multi-cutting cells, respectively. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
-
14. A photovoltaic module, comprising:
-
a solar cell module including a plurality of solar cells; an inverter unit to receive a direct current (DC) voltage from the solar cell module and convert the DC voltage received from the solar cell module into an alternating current (AC) voltage without converting a level of the DC voltage received from the solar cell module; and a capacitor unit to store the DC voltage output from the solar cell module, wherein the inverter unit converts the DC voltage stored in the capacitor unit into the AC voltage, wherein the solar cell module further includes a first conductive line connected to a first solar cell among the plurality of solar cells and a second conductive line connected to a second solar cell among the plurality of solar cells, wherein the first conductive line and the second conductive line are connected to the capacitor unit disposed on a back surface of the solar cell module, wherein the photovoltaic module further includes a controller to control the inverter unit, wherein, when a part of the plurality of solar cells is shaded, the controller controls the inverter unit to supply a second current having a level lower than a first current which has been supplied prior to occurrence of a shaded region, without bypassing at least one of the first conductive line and the second conductive line, wherein the photovoltaic module further includes an input current detector to detect an input current flowing into the capacitor unit, wherein the photovoltaic module further includes an input voltage detector to detect an input voltage of both terminals of the capacitor unit, and wherein the controller determines whether a part of the plurality of solar cells is shaded, based on the input current detected by the input current detector or the input voltage detected by the input voltage detector and, when the shaded region occurs, controls the inverter unit to supply a second current having a level lower than the first current which has been supplied prior to occurrence of the shaded region.
-
Specification